<template>
	<div>
		<el-upload
			:action="upload.url"
			:before-upload="handleBeforeUpload"
			:on-success="handleUploadSuccess"
			:on-error="handleUploadError"
			class="editor-img-uploader"
			name="file"
			:show-file-list="false"
			:headers="upload.headers"
			ref="uploadRef"
			v-if="type === 'url'"
		>
		</el-upload>
		<div class="editor">
			<quill-editor ref="quillEditorRef" v-model:content="content" contentType="html" @textChange="(e: any) => $emit('update:modelValue', content)" :options="options" :style="styles" />
		</div>
	</div>
</template>

<script setup lang="ts">
import { QuillEditor, Quill } from '@vueup/vue-quill';
import '@vueup/vue-quill/dist/vue-quill.snow.css';
import { propTypes } from '@/utils/propTypes';

const props = defineProps({
  /* 编辑器的内容 */
  modelValue: propTypes.string,
  /* 高度 */
  height: propTypes.string,
  /* 最小高度 */
  minHeight: propTypes.number.def(100),
  /* 只读 */
  readOnly: propTypes.bool.def(false),
  /* 上传文件大小限制(MB) */
  fileSize: propTypes.number.def(5),
  /* 类型（base64格式、url格式） */
  type: propTypes.string.def('url')
});

const { proxy } = getCurrentInstance() as ComponentInternalInstance;

const upload = reactive<UploadOption>({
  headers: {},
  url: import.meta.env.VITE_APP_BASE_API + '/resource/oss/upload'
})
const quillEditorRef = ref(); 
let Size = Quill.import('attributors/style/size');
Size.whitelist = ['20px', '21px', '22px', '23px', '24px', '25px', '26px']; //修改默认字体大小选项
Quill.register(Size, true);
let Font = Quill.import('formats/font');
const fonts = ['SimHei', 'SimSun', 'Microsoft-YaHei', 'KaiTi', 'FangSong']; //修改默认字体
Font.whitelist = fonts;
Quill.register(Font, true);
const options = ref({
  theme: "snow",
  bounds: document.body,
  debug: "warn",
  modules: {
    clipboard: {
    // 粘贴板，处理粘贴时候的自带样式
      matchers: [
        [
          Node.ELEMENT_NODE,
          (node, delta) => {
            delta.ops = delta.ops.map((op) => {
              return {
                insert: op.insert
              };
            });
            return delta;
          }
        ]
      ]
    },
    // 工具栏配置
    toolbar: {
      container: [
        // ["bold", "italic", "underline", "strike"],       // 加粗 斜体 下划线 删除线
        // ["blockquote", "code-block"],                    // 引用  代码块
        // [{ list: "ordered" }, { list: "bullet" }],       // 有序、无序列表
        // [{ indent: "-1" }, { indent: "+1" }],            // 缩进
        // [{ size: ["small", false, "large", "huge"] }],   // 字体大小
        // [{ header: [1, 2, 3, 4, 5, 6, false] }],         // 标题
        // [{ color: [] }, { background: [] }],             // 字体颜色、字体背景颜色
        // [{ align: [] }],                                 // 对齐方式
        // ["clean"],                                       // 清除文本格式
        // ["link", "image", "video"]                       // 链接、图片、视频
        ['bold', 'italic', 'underline'], // toggled buttons
        [{ list: 'ordered' }, { script: 'sub' }, { script: 'super' }],
        [{ size: Size.whitelist }], // custom dropdown
        [{ font: Font.whitelist }],
        ['clean']
      ],
      handlers: {
        image: function (value: any) {
          if (value) {
            // 调用element图片上传
            (document.querySelector(".editor-img-uploader>.el-upload") as HTMLDivElement)?.click();
          } else {
            Quill.format("image", true);
          }
        },
      },
    }
  },
  placeholder: "请输入内容",
  readOnly: props.readOnly,
});

const styles = computed(() => {
  let style: any = {};
  if (props.minHeight) {
    style.minHeight = `${props.minHeight}px`;
  }
  if (props.height) {
    style.height = `${props.height}`;
  }
  return style;
})

const content = ref("");
watch(() => props.modelValue, (v) => {
  if (v !== content.value) {
    content.value = v === undefined ? "<p></p>" : v;
  }
}, { immediate: true });

// 图片上传成功返回图片地址
const handleUploadSuccess = (res: any) => {
  // 如果上传成功
  if (res.code === 200) {
    // 获取富文本实例
    let quill = toRaw(quillEditorRef.value).getQuill();
    // 获取光标位置
    let length = quill.selection.savedRange.index;
    // 插入图片，res为服务器返回的图片链接地址
    quill.insertEmbed(length, "image", res.data.url);
    // 调整光标到最后
    quill.setSelection(length + 1);
    proxy?.$modal.closeLoading();
  } else {
    proxy?.$modal.loading(res.msg);
    proxy?.$modal.closeLoading();
  }
}

// 图片上传前拦截
const handleBeforeUpload = (file: any) => {
  const type = ["image/jpeg", "image/jpg", "image/png", "image/svg"];
  const isJPG = type.includes(file.type);
  //检验文件格式
  if (!isJPG) {
    proxy?.$modal.msgError(`图片格式错误!`);
    return false;
  }
  // 校检文件大小
  if (props.fileSize) {
    const isLt = file.size / 1024 / 1024 < props.fileSize;
    if (!isLt) {
      proxy?.$modal.msgError(`上传文件大小不能超过 ${props.fileSize} MB!`);
      return false;
    }
  }
  proxy?.$modal.loading('正在上传文件，请稍候...');
  return true;
}

// 图片失败拦截
const handleUploadError = (err: any) => {
  console.error(err);
  proxy?.$modal.msgError('上传文件失败');
}
</script>

<style>
.editor-img-uploader {
  display: none;
}
.editor,
.ql-toolbar {
  white-space: pre-wrap !important;
  line-height: normal !important;
}
.quill-img {
  display: none;
}
.ql-snow .ql-tooltip[data-mode="link"]::before {
  content: "请输入链接地址:";
}
.ql-snow .ql-tooltip.ql-editing a.ql-action::after {
  border-right: 0;
  content: "保存";
  padding-right: 0;
}
.ql-snow .ql-tooltip[data-mode="video"]::before {
  content: "请输入视频地址:";
}
.ql-snow .ql-picker.ql-size .ql-picker-label::before,
.ql-snow .ql-picker.ql-size .ql-picker-item::before {
  content: "14px";
}
.ql-snow .ql-picker.ql-size .ql-picker-label[data-value="small"]::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value="small"]::before {
  content: "10px";
}
.ql-snow .ql-picker.ql-size .ql-picker-label[data-value="large"]::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value="large"]::before {
  content: "18px";
}
.ql-snow .ql-picker.ql-size .ql-picker-label[data-value="huge"]::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value="huge"]::before {
  content: "32px";
}
.ql-snow .ql-picker.ql-header .ql-picker-label::before,
.ql-snow .ql-picker.ql-header .ql-picker-item::before {
  content: "文本";
}
.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="1"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="1"]::before {
  content: "标题1";
}
.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="2"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="2"]::before {
  content: "标题2";
}
.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="3"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="3"]::before {
  content: "标题3";
}
.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="4"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="4"]::before {
  content: "标题4";
}
.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="5"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="5"]::before {
  content: "标题5";
}
.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="6"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="6"]::before {
  content: "标题6";
}
.ql-snow .ql-picker.ql-font .ql-picker-label::before,
.ql-snow .ql-picker.ql-font .ql-picker-item::before {
  content: "标准字体";
}
.ql-snow .ql-picker.ql-font .ql-picker-label[data-value="serif"]::before,
.ql-snow .ql-picker.ql-font .ql-picker-item[data-value="serif"]::before {
  content: "衬线字体";
}
.ql-snow .ql-picker.ql-font .ql-picker-label[data-value="monospace"]::before,
.ql-snow .ql-picker.ql-font .ql-picker-item[data-value="monospace"]::before {
  content: "等宽字体";
}
</style>
